LPS Hard CoralsLarge Polyp Stony Corals are generally larger calcareous corals with large fleshy polyps. The degree of extension of the tentacles depends upon the amount of light, current, and whether the coral is feeding or not. Most of the LPS hard corals produce long sweeper tentacles which they use to keep any other organisms a safe distance away. Looking for What-You-See-Is-What-You-Get Corals? Visit our Diver's Den >